Multiple choice general knowledge math & puzzles

Lata has the same number of sister as she has brothers, but her brother shyam has twice as many sisters as he has brothers. How many children are there in the family?

  1. 7

  2. 3

  3. 6

  4. 5

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A Correct answer
Explanation

Let b be brothers and s be sisters. For Lata: s-1 = b. For Shyam: s = 2(b-1). Substituting s = b+1 into the second: b+1 = 2b - 2, so b = 3. Then s = 4. Total children = 3 + 4 = 7.